Electric conductor



(No Model.)

W. VOGLER.

ELECTRIC CONDUCTOR.

No. 460,606. Patented Oct. 6, 1891.

Ma. /Z67' L 9 UNITED STATES PATENT OFFICE...

VILLIAM VOGLER, OF SOMERVILLE, h'IASSACHUSETTS.

ELECTRIC CONDUCTOR.

SPECIFICATION forming part of Letters Patent No. 460,606, dated October6, 1891.

Application filed November 9, 1889. Serial No. 329 ,762. (No model.)

To all whom it may concern.-

Be it known that I, WVILLIAM VOGLER, of Somerville, county of Middlesex,State of Massachusetts, have invented an Improvement in ElectricConductors, of which the following description, in connection with theaccompanying drawings, is a specification, like letters on the drawingsrepresenting like parts.

This invention has for its object to provide a novel electric conductorespecially adapted to be used in telephonic communication.

In accordance with my invention a re-enforcing strip is interposedbetween two branches or wires, each of which has an independent semicylindrical insulation, the branches being on opposite sides of and theflat sides of the insulation resting upon the strip, an outer coveringof insulation coverin g.

the branches and re-enforcing strip.

My invention therefore consists, essentially, in an electric conductorconsisting of two branches or wires, an independent semi-cylindricalinsulation for each branch, and a re-enforcing strip interposed betweensaid branches, and upon the opposite sides of which the flat surface ofthe insulation rests, and an outer covering of insulation envelopingsaid branches and re-enforcing strip to secure the parts in place,substantially as will be described.

Figure 1 represents a sufficient portion of an electric conductorconstructed in accord ance with my invention to enable it to beunderstood; and Fig. 2, a transverse section on line as m, Fig. 1.

My improved electric conductor is composed of two wires or conductors aa, forming branches of a metallic circuit, and a re-enforcin g strip,web, or ribbon b interposed between the said wires. The re-enforcingstrip or ribbon b is made flat, so that an increased surface isobtained, against which the semi-cylindricalindependent insulation 19',covering each of the wires a a, may bear, to thereby keep the said wiresin their proper place 011 opposite sides of the re-enforcing strip. Eachwire ca, which maybe an ordinary insulated wire, will be first coveredwith the semi-cylindrical insulation 17', and the flat side thereof willbe laid against the flat surface of the re-enforcing strip on each side,and the said wires will then be secured in place by means of a covering0, preferably of cotton or other textile braid, saturated withinsulating material enveloping said branches or wires, and thereenforcing strip to secure the parts in place.

The re-enforcing strip will preferably be made of metal, which may besteel, brass, &c., and the conductor used in telephonic communication,and when thus used the branches or wires a a may be connected at theiropposite ends to the re-enforcing strip and the latter form a commonreturn for the said wires. 111 this manner each branch may form part ofan independent metallic circuit, and induction from one circuit to theother, or from extraneous sources, is obviated or reduced to a minimum.So, also, if desired, the branches or wires a a may be connectedtogether to form a metallic circuit, and the re-enforcing stripconnected at its opposite ends to the ground to form an independentground-circuit, by which currents induced from extraneous sources may beconducted to the ground. In either case a complete metallic circuit isformed in a single conductor enveloped by a covering of insulation andrequiring but a single insulator to support it.

The re-enforcing strip is preferably made of metal to enable myimprovedconductor to be used in telephonic communication, as described; but I donot desire to limit my invention to the use of a metal strip, as thesame may be made of other material-such, for instance, as wood,card-board, webbing, &c.to impart to the conductor the desiredstiffness, and when so constructed the said conductor may be used forelectric lighting and like uses. The fiat re-enforcing strip preventsthe tiewires, by which the conductor is secured to its insulator orsupport, from cutting into or abrading the insulation on the branchwires.

The re-enforcing strip, when made of metal, will be sufficiently thin topermit the conductor to be readily bent, and the fiat sides will be ofsufficient width to prevent relative displacement of the insulation.

I claim As an improved article of manufacture, an electric conductorconsisting of two branches or wires, an independent semi-cylindricalinsulation b for each branch, and a re-enforc ICO ing strip interposedbetween said branches, name to this specification in the presence ofupon the opposite sides of which the flat surtwo subscribing witnesses.face of the insulation rests, and an outer cover- T T ing' of insulationenveloping said branches, ILLIAM (ILER' 5 and re-enforcing strip tosecure the parts in Witnesses:

place, substantially as described. J AS. I1. CHURCHILL,

In testimony whereof I have signed my E. J. BENNETT.

